body {
    padding: 0;
    margin: 0;
}
.wrap {
    position: relative;
    width: 100%;
    height: 2628px;
    background: url(http://js.ibaotu.com/images/activity/qixi/main_bg.jpg) center no-repeat;
}
.tips {
    position: absolute;
    bottom: 276px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 709px;
    font-size: 24px;
    line-height: 36px;
    color: #fff;
}
.tips a {
    color: #fff;
    text-decoration: none;
}
.topic {
    position: absolute;
    bottom: 32px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 256px;
    height: 104px;
    background: url(http://js.ibaotu.com/images/activity/qixi/topic.png) center no-repeat;
}